5PCS Mini 3A DC-DC Converter Step Down Module Adjustable 3V 5V 16V Power for RC Whole network smallest maximum 3A output. Application: DIY mobile power, monitor power supply, power buggies, camera power supply, car power, communications equipment supply, various right size and weight for demanding applications (such as aviation models, etc.). Input voltage: 4.5-28V Output Voltage: 0.8-20V (adjustable) Output current: rated current 3A(MAX). Switching Frequency: 1MHz Output Ripple:less than 30mV Efficiency:96%(max) Operating temperature: Industrial grade (-40 C to +85 C) Module Properties: Non-isolated step-down module (buck) Size:22*17*4mm